[48.02] Structure of the Mesosphere of Venus from the reanalized Venera 15 IR-spectrometry data

L.V. Zasova, V.I. Moroz, N.I. Ignatiev, I.V. Khatountsev (IKI RAS)

The results of IR-spectromerty on board VENERA-15 have been
reanalyzed. The new data concerned temperature, aerosol,
water vapor and thermal zonal wind profiles have been
obtained and the latitudinal and local time related
variations have been investigated. The cyclostrophic zonal
wind fields show the presence of mid-latitudinal jet which
changes its position with solar time, so that its altitude
and wind speed are correlated and indicated the conservation
of angular momentum. The connection between altitude of jet
and its velocity shows the flux conservation. The wind
velocity in the midlatitudinal jet is correlated with
temperature inversion in the "cold collar". The
low-latitudinal jet (at about 80 km near 20 deg.) is also
connected with inversion in temperature profile observed
there.

The author(s) of this abstract have provided an email address
for comments about the abstract: zasova@irn.iki.rssi.ru